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From "Pedro Marques (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (AMQ-4576) MQTT BlockingConnection.receive fails when subscribing multiple topics
Date Mon, 17 Jun 2013 17:55:20 GMT

    [ https://issues.apache.org/jira/browse/AMQ-4576?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13685764#comment-13685764
] 

Pedro Marques commented on AMQ-4576:
------------------------------------

Tested the new version and it appears corrected.
                
> MQTT BlockingConnection.receive fails when subscribing multiple topics
> ----------------------------------------------------------------------
>
>                 Key: AMQ-4576
>                 URL: https://issues.apache.org/jira/browse/AMQ-4576
>             Project: ActiveMQ
>          Issue Type: Bug
>    Affects Versions: 5.8.0
>            Reporter: Pedro Marques
>            Assignee: Timothy Bish
>             Fix For: 5.9.0
>
>
> When more than one topic is supplied to BlockingConnection.subscribe the BlockingConnection.receive
fails and the following exception is thrown:
> {code}
> java.io.IOException: Could not connect: CONNECTION_REFUSED_SERVER_UNAVAILABLE
> 	at org.fusesource.mqtt.client.CallbackConnection$LoginHandler$1.onTransportCommand(CallbackConnection.java:331)
> 	at org.fusesource.hawtdispatch.transport.TcpTransport.drainInbound(TcpTransport.java:659)
> 	at org.fusesource.hawtdispatch.transport.SslTransport.drainInbound(SslTransport.java:264)
> 	at org.fusesource.hawtdispatch.transport.TcpTransport$6.run(TcpTransport.java:538)
> 	at org.fusesource.hawtdispatch.internal.NioDispatchSource$3.run(NioDispatchSource.java:209)
> 	at org.fusesource.hawtdispatch.internal.SerialDispatchQueue.run(SerialDispatchQueue.java:100)
> 	at org.fusesource.hawtdispatch.internal.pool.SimpleThread.run(SimpleThread.java:77)
> {code}
> On the server shows the following messages:
> {code}
> 2013-06-06 15:06:00,125 WARN  [org.apache.activemq.transport.mqtt.MQTTProtocolConverter]
(ActiveMQ BrokerService[localhost] Task-1) Exception occurred processing: 
> null: javax.jms.JMSException: Durable consumer is in use for client: 6056@3232261834SOC
and subscriptionName: 6056@3232261834SOC
> 2013-06-06 15:06:00,130 WARN  [org.apache.activemq.broker.TransportConnection] (ActiveMQ
Transport: tcp:///127.0.0.1:53389@1883) Failed to add Connection ID:LTD-SFW004-53303-1370527418664-2:14,
reason: javax.jms.InvalidClientIDException: Broker: localhost - Client: 6056@3232261834SOC
already connected from tcp://127.0.0.1:53388
> 2013-06-06 15:06:00,130 WARN  [org.apache.activemq.broker.TransportConnection.Transport]
(ActiveMQ Transport: tcp:///127.0.0.1:53389@1883) Transport Connection to: tcp://127.0.0.1:53389
failed: java.io.IOException: Broker: localhost - Client: 6056@3232261834SOC already connected
from tcp://127.0.0.1:53388
> 2013-06-06 15:06:00,130 ERROR [pt.intellicare.onecare.mqtt.OneCareFuseMqttClient] (DefaultQuartzScheduler_Worker-8)
Problem receiving mqtt messages: java.io.IOException: Could not connect: CONNECTION_REFUSED_SERVER_UNAVAILABLE
> 	at org.fusesource.mqtt.client.CallbackConnection$LoginHandler$1.onTransportCommand(CallbackConnection.java:331)
[:1.5-SNAPSHOT]
> 	at org.fusesource.hawtdispatch.transport.TcpTransport.drainInbound(TcpTransport.java:659)
[:1.17]
> 	at org.fusesource.hawtdispatch.transport.TcpTransport$6.run(TcpTransport.java:538) [:1.17]
> 	at org.fusesource.hawtdispatch.internal.NioDispatchSource$3.run(NioDispatchSource.java:209)
[:1.17]
> 	at org.fusesource.hawtdispatch.internal.SerialDispatchQueue.run(SerialDispatchQueue.java:100)
[:1.17]
> 	at org.fusesource.hawtdispatch.internal.pool.SimpleThread.run(SimpleThread.java:77)
[:1.17]
> {code}
> Code example:
> {code}
> MQTT = new MQTT();
> mqtt.setHost(url);
> mqtt.setClientId(clientId);
> mqtt.setUserName(user);
> mqtt.setPassword(password);
> mqtt.setCleanSession(false);
> BlockingConnection connection = mqtt.blockingConnection();
> connection.connect();
> Topic[] topics = {new Topic("TopicA", QoS.EXACTLY_ONCE), new Topic("TopicB", QoS.EXACTLY_ONCE)};
> byte[] qoses = connection.subscribe(topics);
> while (true) {
>     Message message = connection.receive();
>     byte[] payload = message.getPayload();
>     String messageContent = new String(payload);
>     System.out.println("Received message from topic: " + message.getTopic() + " Message
content: " + messageContent);
>     message.ack();
> }
> {code}
> The test failed when using the current fusesource client (1.5) on ActiveMQ 5.9, on Mosquitto
mqtt the code works correctly.

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